Dr. John P. Brennan, MD - Brooklyn, New York

Hannah E.

Dr. Brennan and Jais provided beyond exceptional care for me both during pregnancy and postpartum. They listened carefully to each concern and worry I had, and provided me with clear answers and reassurance every step of the way. They were supportive and never passed judgement. They truly care about each and every one of their patients and are 1000% dedicated to making your pregnancy, labor, delivery and postpartum journey a positive experience.

When I was unable to login to my LabCorp account to see the results of my NIPT, Jais personally called me at 10pm to let me know the gender of my baby and the results of the testing.
When I went into labor at 3am, I was on the phone with Dr. Brennan within 15 minutes.

I was calm and confident going into the hospital for delivery knowing that Dr. Brennan would be there to deliver my baby himself. His presence and guidance made the delivery

I couldn’t recommend them more - they make you feel heard, valued and comforted in a way I’ve never before experienced with a doctor. They are not only excellent health care providers, they are excellent people!

Adria S.

Dr Brennan and his wife Jais are the ultimate birthing dream team! I came across Dr Brennan while searching for a new obgyn and when I discovered that I was pregnant. I was anxious and truly had no idea what to expect. Dr Brennan and Jais were incredibly communicative and were quick to mention that I could reach out at any time with any question no matter what. They always made themselves available, whether I was asking about a certain vitamin or making a bigger decision about my birth plan. They are both extremely knowledgeable and flexible, reminding me that my feelings and experiences were all normal throughout the course of my pregnancy. They also were very transparent/honest about various test results and what that meant for me and the baby. Ultimately they helped me deliver a perfect, healthy baby boy and I’m forever grateful to them for that. I don’t think I ever looked forward to going to the doctor more than when Dr Brennan and Jais were taking care of me and my baby!

CelineAnthony D.

We couldn't be happier with the care we've received here! Dr Brennan's practice is a small family office so I got very personalized, individualized care. If you want a big hospital/clinic setting, this might not be for you.
Dr Brennan took us in after we moved and I was already 18 months pregnant (and nobody else would take us), I received excellent care throughout my first pregnancy and now with my second pregnancy. They know and care about their patients, take their time explaining and reassuring their patients. They have great equipment which allows them to check the baby more thoroughly (both the cervix + the baby through ultrasound) rather than relying on less precise alternatives (measuring the bump or checking dilation digitally). I gave birth to a healthy baby boy in 2021 with no tears and no complications and didn't think twice about who would be my provider for my second child. It's hard to find a caring and capable physician, so I'm thrilled that we did.

Hadassah N.

I have been a patient of Dr. Brennan's for the last 7 years, for 4 pregnancies. He is one of the best-kept secrets in Brooklyn! I travel a solid hour from Mill Basin to see him and it is worth it. You can expect attentive, caring and non-alarmist prenatal visits, but more importantly, a very high level of skill and calm at delivery that is so hard to find. In my own experience, Dr. Brennan expertly avoided my needing an emergency C-section and advocated for me when others in the delivery room thought it would be imminent. He does not make that decision lightly and always has the mother and baby's health as the top priority.

Since he is a solo practitioner, you never have to worry about another OB showing up at your delivery (as many of my friends in other practices have learned the hard way!). New Years, Yom Kippur-- Dr. Brennan was reliable as ever. In addition, he has seen me in the wee hours of the night for emergencies instead of directing me to the hospital. This is virtually unheard of.

As a healthcare practitioner myself, I clearly recognize an office that maintains high quality standards for their patients, even when it is not "a money-maker". This office does not run unnecessary testing, and any fees I incurred were extremely fair. I never feel rushed. Their ultrasound/sonogram equipment is state of the art, and Dr. Brennan has his finger on the pulse of the latest research and developments. His recommendations are based on actual science, not speculation.

By the way, Dr. Brennan's wife Jais works as his assistant and works hard to ensure that you always feel welcome and comfortable in the office. She is super sweet and makes sure all of your questions are answered. Between Dr. Brennan and Jais, I wish all women were so fortunate to have this level of obstetric care.

PS - Their new answering system requires you to leave a message-- don't be afraid, they'll call you back ASAP.

ginaira S.

We knew we wanted to have Dr. Brennan deliver our first baby after my sisters experience of him delivering 4 of my nieces and nephew. It was the best decision possible! The care of Dr. Brennan, his wife Jais, and even Carmella the receptionist truly made our pregnancy journey wonderful. We looked forward to a long drive from Forest Hills, Queens to Brooklyn for every appointment to see them! They truly take their time with each appointment and even go through a very detailed birth plan which was the best and put my mind at ease! My actual birth was so positive thanks to Dr. Brennan. I was overly worried about it with being a first time mom, but with his support along with the staff at Lennox Hill I couldn’t have asked for a better experience. I could thank them endlessly for the past 9 months. Now I get to have my healthy baby girl in my arms. Highly recommend!

Bridie O.

Dr John Brennan and his partner Jais are responsible for the highest level of care and advocacy we could have possibly asked for during the process of having our first child. They were constantly available and truly cared for us and our baby. In a backdrop of a health care system that puts profits over people, the Brennans are rare and incredible exceptions, their patients and people are at the center of everything they do.

Leah T.

Dr. Brennan, Jais, and team provided exceptional care throughout my pregnancy journey. Their compassionate bedside manner immediately put me at ease from the first appointment. During delivery, Dr. Brennan ensured I felt comfortable and supported, making the experience as smooth as possible. What truly stood out was the team's personal touch, offering their cell phone numbers for any urgent concerns, which provided immense reassurance. With appointments every two weeks, they demonstrated a commitment to monitoring my health closely. The attention to detail and genuine care shown by Dr. Brennan and Jais made me feel valued and supported throughout. As a new parent, I can confidently recommend them to anyone seeking exceptional obstetric care. Their expertise, compassion, and personalized approach set them apart, making them the perfect choice for expectant parents. I am truly grateful for their guidance and support during this important time in my life. I'll continue to seek care under them for future OB-GYN appointment.

Maria O.

I went to Dr Brennan as a first time mom and I am so happy I did. The individualized attention, bedside manner, and overall care was truly above and beyond. Dr Brennan delivered a healthy baby boy and I am eternally grateful (especially because he was a breach baby!). The office is clean and conveniently located. I am so grateful to have had this practice as an option during my pregnancy and am so grateful for the care and skill of both Dr Brennan and Jais. They made a scary and overwhelming process as manageable and positive as possible.